用who,whom或 which把以下每对句子改写成一句话
例句：1.She is the girl.She met me yesterday.
She is the girl who met me yesterday.
2.This is the book.I bought yesterday.
This is the book which I bought yesterday.
3.She is the girl.I met her yesterday.
She is the girl who(or whom) I met yesterday.
1.This is the car. the mechanic repaired it yesterday.
2.He is the man.I invited him to the party.
3.These are the things. I bought them yesterday.
4.He is the man. He came here lastweek.
5.He is the policeman.He caught the thieves.
6.She is the woman. I met her yesterday.
7.She is the nurse. She lookedafter me.
8.I am the person. I wrote to you.